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. 2020 May 28;10(2 Suppl):41S–55S. doi: 10.1177/2192568219868217

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 7. — A 50-year-old female patient (case 38) with an osteoclastoma in L1 that was removed and an expandable implant was inserted via a lateral approach; A: augmented reality (AR) display with the 3-dimensional (3D) representation of the vertebrae T11-L3 and the tumor outline in L1 (orange), additionally the fixation T11/T12-L2/L3 that was implanted before is visualized in blue; B: enlarged view of A with the pointer in the surgical field, the pointer tip is visualized as green crosshair, while the microscope focus point is visualized as a blue crosshair; C: after removal of the tumor and insertion of the expandable cage a repeated intraoperative computed tomography (iCT) was performed, in which the implant was segmented and subsequently visualized by AR (dark blue) showing the close matching of AR object and implant; D: overview display of C, depicting how the video frame is placed in relation to the 3D image anatomy.